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The main advantage of the Common Table Expression (when not using it for recursive queries) is encapsulation, instead of having to declare the sub-query in every place you wish to use it, you are able to define it once, but have multiple references to it.
03/03/19
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In today's modern world, SQL query planners can do all sorts of tricks to make queries run more efficiently, but they must always reach the same final answer as a query that is executed per the standard order of execution.
03/03/19
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This provides support for trigram which is a N-gram with N == 3. N-grams are useful because they allow finding strings with similar characters and, in essence, that's what a misspelling is - a word that is similar but not quite right.
03/03/19
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To present search results it is ideal to show a part of each document and how it is related to the query. Usually, search engines show fragments of the document with marked search terms. PostgreSQL provides a function ts_headline that implements this functionality.
03/02/19
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jubacopywriter
jubacopywriter
The practice of distilling insights on future outcomes from massive webs of data is known as predictive modeling
03/01/19
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Bayard Rustin was a chief organizer of the 1963 March on Washington and thought reparations, and even separate African-American studies departments, were a bad idea. Many of his beliefs would be antithetical to today’s social justice advocates. In the video above, Coleman Hughes argues that by cherry-picking our heroes, and focusing on small parts of their legacy, we are merely paying lip service to their mission.
03/01/19
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metamitya
metamitya
the problem private blockchains solve
!time:12:40 the problem private blockchains solve
12:40 7s
03/01/19
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metamitya
metamitya
Driven by Compression Progress: A Simple Principle Explains Essential Aspects of Subjective Beauty, Novelty, Surprise, Interestingness, Attention, Curiosity, Creativity, Art, Science, Music, Jokes J¨urgen Schmidhuber
Driven by Compression Progress: A Simple Principle Explains Essential Aspects of Subjective Beauty, Novelty, Surprise, Interestingness, Attention, Curiosity, Creativity, Art, Science, Music, Jokes J¨urgen Schmidhuber
02/26/19
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But the new great game is not the war for oil pipelines. It is the war for information pipelines: the control over fibre-optic cable paths that spread undersea and overland. The new global treasure is control over the giant data flows that connect whole continents and civlisations, linking the communications of billions of people and organisations.
02/26/19
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